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Extended the functionality of expandPath().

Browse Source 
It now performs certain expanding actions depending on an extra argument.
It also can expand relative paths to absolute paths now, hopefully
fixing bug #456.


git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@1185 8092fc87-c524-0410-9efc-e669fe64eaf9
This commit is contained in:
meep-eep
2003-09-03 02:01:12 +00:00
parent e0d56f37ed
commit a524e09504
3 changed files with 225 additions and 119 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sc2/src/options.c
+3 -3
View File
@@ -83,7 +83,7 @@ prepareConfigDir (void) {
static uio_AutoMount *autoMount[] = { NULL };
uio_MountHandle *contentHandle;
if (expandPath (buf, PATH_MAX - 13, CONFIGDIR) == -1)
if (expandPath (buf, PATH_MAX - 13, CONFIGDIR, EP_ALL_SYSTEM) == -1)
{
// Doesn't have to be fatal, but might mess up things when saving
// config files.
@@ -115,7 +115,7 @@ prepareConfigDir (void) {
void
prepareSaveDir (void) {
char buf[PATH_MAX];
if (expandPath (buf, PATH_MAX - 13, SAVEDIR) == -1)
if (expandPath (buf, PATH_MAX - 13, SAVEDIR, EP_ALL_SYSTEM) == -1)
{
// Doesn't have to be fatal, but might mess up things when saving
// config files.
@@ -142,7 +142,7 @@ void
prepareMeleeDir (void) {
char buf[PATH_MAX];
if (expandPath (buf, PATH_MAX - 13, MELEEDIR) == -1)
if (expandPath (buf, PATH_MAX - 13, MELEEDIR, EP_ALL_SYSTEM) == -1)
{
// Doesn't have to be fatal, but might mess up things when saving
// config files.
sc2/src/sc2code/libs/file.h
+23 -1
View File
@@ -30,11 +30,33 @@ void unInitTempDir (void);
char *tempFilePath (const char *filename);
extern uio_DirHandle *tempDir;
// from dirs.h
int mkdirhier (const char *path);
const char *getHomeDir (void);
int createDirectory (const char *dir, int mode);
int expandPath (char *dest, size_t len, const char *src);
int expandPath (char *dest, size_t len, const char *src, int what);
// values for 'what':
#define EP_HOME 1
// Expand '~' for home dirs.
#define EP_ABSOLUTE 2
// Make paths absolute
#define EP_ENVVARS 4
// Expand environment variables.
#define EP_DOTS 8
// Process '..' and '.' (not implemented)
#define EP_SLASHES 16
// Change (Windows style) backslashes to (Unix style) slashes.
#define EP_ALL (EP_HOME | EP_ENVVARS | EP_ABSOLUTE | EP_DOTS | EP_SLASHES)
// Everything
// Everything except Windows style backslashes on Unix Systems:
#ifdef WIN32
# define EP_ALL_SYSTEM (EP_HOME | EP_ENVVARS | EP_ABSOLUTE | EP_DOTS | \
EP_SLASHES)
#else
# define EP_ALL_SYSTEM (EP_HOME | EP_ENVVARS | EP_ABSOLUTE | EP_DOTS)
#endif
// from files.h
int copyFile (uio_DirHandle *srcDir, const char *srcName,
sc2/src/sc2code/libs/file/dirs.c
+199 -115
View File
@@ -21,6 +21,7 @@
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "port.h"
#include "config.h"
#include "filintrn.h"
@@ -38,6 +39,10 @@
#define APPDATA_FALLBACK
static char *expandPathAbsolute (char *dest, size_t destLen, char first,
int what);
int
createDirectory(const char *dir, int mode)
{
@@ -162,8 +167,10 @@ getHomeDir (void)
// Expand ~/ in a path, and replaces \ by / on Windows.
// Environment variable parsing could be added here if we need it.
// Returns 0 on success.
// Returns -1 on failure, setting errno.
int
expandPath (char *dest, size_t len, const char *src)
expandPath (char *dest, size_t len, const char *src, int what)
{
char *destend;
char *destptr;
@@ -179,140 +186,217 @@ expandPath (char *dest, size_t len, const char *src)
destptr = dest;
destend = dest + len;
if (src[0] == '~')
{
const char *home;
size_t homelen;
if (src[1] != '/')
{
errno = EINVAL;
return -1;
}
home = getHomeDir ();
if (home == NULL)
{
errno = ENOENT;
return -1;
}
homelen = strlen (home);
CHECKLEN (homelen);
memcpy (destptr, home, homelen);
destptr += homelen;
src++; /* skip the ~ */
}
while (*src != '\0')
if (what & EP_HOME)
{
switch (*src)
if (src[0] == '~')
{
#ifdef WIN32
case '%':
const char *home;
size_t homelen;
if (src[1] != '/')
{
/* Environment variable substitution in Windows */
const char *end; // end of env var name in src
const char *envVar;
char *envName;
size_t envNameLen, envVarLen;
src++;
end = strchr (src, '%');
if (end == NULL)
errno = EINVAL;
return -1;
}
home = getHomeDir ();
if (home == NULL)
{
errno = ENOENT;
return -1;
}
homelen = strlen (home);
if (what & EP_ABSOLUTE) {
dest = expandPathAbsolute (dest, destend - dest,
home[0], what);
if (dest == NULL)
{
errno = EINVAL;
// errno is set
return -1;
}
envNameLen = end - src;
envName = HMalloc (envNameLen + 1);
memcpy (envName, src, envNameLen + 1);
envName[envNameLen] = '\0';
envVar = getenv (envName);
HFree (envName);
what &= ~EP_ABSOLUTE;
// The part after the '~' should not be seen
// as absolute.
}
if (envVar == NULL)
CHECKLEN (homelen);
memcpy (destptr, home, homelen);
destptr += homelen;
src++; /* skip the ~ */
}
}
if (what & EP_ABSOLUTE)
{
destptr = expandPathAbsolute (destptr, destend - destptr, src[0],
what);
if (destptr == NULL)
{
// errno is set
return -1;
}
}
if (what & EP_ENVVARS)
{
while (*src != '\0')
{
switch (*src)
{
#ifdef WIN32
case '%':
{
#ifdef APPDATA_FALLBACK
if (strncmp (src, "APPDATA", envNameLen) != 0)
/* Environment variable substitution in Windows */
const char *end; // end of env var name in src
const char *envVar;
char *envName;
size_t envNameLen, envVarLen;
src++;
end = strchr (src, '%');
if (end == NULL)
{
errno = EINVAL;
return -1;
}
envNameLen = end - src;
envName = HMalloc (envNameLen + 1);
memcpy (envName, src, envNameLen + 1);
envName[envNameLen] = '\0';
envVar = getenv (envName);
HFree (envName);
if (envVar == NULL)
{
#ifdef APPDATA_FALLBACK
if (strncmp (src, "APPDATA", envNameLen) != 0)
{
// Substitute an empty string
src = end + 1;
break;
}
// fallback for when the APPDATA env var is not set
// Using SHGetFolderPath or SHGetSpecialFolderPath
// is problematic (not everywhere available).
fprintf(stderr, "Warning: %%APPDATA%% is not set. "
"Falling back to \"%%USERPROFILE%%\\Application "
"Data\"\n");
envVar = getenv ("USERPROFILE");
if (envVar != NULL)
{
#define APPDATA_STRING "\\Application Data"
envVarLen = strlen (envVar);
CHECKLEN (envVarLen + sizeof (APPDATA_STRING) - 1);
strcpy (destptr, envVar);
destptr += envVarLen;
strcpy (destptr, APPDATA_STRING);
destptr += sizeof (APPDATA_STRING) - 1;
src = end + 1;
break;
}
// fallback to "../userdata"
fprintf(stderr, "Warning: %%USERPROFILE%% is not set. "
"Falling back to \"..\\userdata\" for %%APPDATA%%"
"\n");
#define APPDATA_FALLBACK_STRING "..\\userdata"
CHECKLEN (sizeof (APPDATA_FALLBACK_STRING) - 1);
strcpy (destptr, APPDATA_FALLBACK_STRING);
destptr += sizeof (APPDATA_FALLBACK_STRING) - 1;
src = end + 1;
break;
#else /* !defined (APPDATA_FALLBACK) */
// Substitute an empty string
src = end + 1;
break;
}
// fallback for when the APPDATA env var is not set
// Using SHGetFolderPath or SHGetSpecialFolderPath
// is problematic (not everywhere available).
fprintf(stderr, "Warning: %%APPDATA%% is not set. "
"Falling back to \"%%USERPROFILE%%\\Application "
"Data\"\n");
envVar = getenv ("USERPROFILE");
if (envVar != NULL)
{
#define APPDATA_STRING "\\Application Data"
envVarLen = strlen (envVar);
CHECKLEN (envVarLen + sizeof (APPDATA_STRING) - 1);
strcpy (destptr, envVar);
destptr += envVarLen;
strcpy (destptr, APPDATA_STRING);
destptr += sizeof (APPDATA_STRING) - 1;
src = end + 1;
break;
}
// fallback to "../userdata"
fprintf(stderr, "Warning: %%USERPROFILE%% is not set. "
"Falling back to \"..\\userdata\" for %%APPDATA%%"
"\n");
#define APPDATA_FALLBACK_STRING "..\\userdata"
CHECKLEN (sizeof (APPDATA_FALLBACK_STRING) - 1);
strcpy (destptr, APPDATA_FALLBACK_STRING);
destptr += sizeof (APPDATA_FALLBACK_STRING) - 1;
src = end + 1;
break;
#else /* !defined (APPDATA_FALLBACK) */
// Substitute an empty string
src = end + 1;
break;
#endif /* APPDATA_FALLBACK */
}
}
envVarLen = strlen (envVar);
CHECKLEN (envVarLen);
strcpy (destptr, envVar);
destptr += envVarLen;
src = end + 1;
break;
}
envVarLen = strlen (envVar);
CHECKLEN (envVarLen);
strcpy (destptr, envVar);
destptr += envVarLen;
src = end + 1;
break;
}
#endif
#if 0
case '$':
/* Environment variable substitution for Unix */
// not implemented
// Should accept both $BLA_123 and ${BLA}
break;
case '$':
/* Environment variable substitution for Unix */
// not implemented
// Should accept both $BLA_123 and ${BLA}
break;
#endif
default:
CHECKLEN(1);
*(destptr++) = *(src++);
break;
default:
CHECKLEN(1);
*(destptr++) = *(src++);
break;
} // switch
} // while
*destptr = '\0';
} // if (what & EP_ENVVARS)
else
{
strcpy (destptr, src);
}
if (EP_SLASHES)
{
/* Replacing backslashes in path by slashes. */
destptr = dest;
while (*destptr != '\0')
{
if (*destptr == '\\')
*destptr = '/';
destptr++;
}
}
*destptr = '\0';
#ifdef WIN32
/* Replacing backslashes in path by slashes in Windows. */
destptr = dest;
while (*destptr != '\0')
{
if (*destptr == '\\')
*destptr = '/';
destptr++;
}
#endif
return 0;
}
// helper for expandPath, expanding an absolute path
// returns a pointer to the end of the filled in part of dest.
static char *
expandPathAbsolute (char *dest, size_t destLen, char first, int what)
{
if (first == '/' || ((what & EP_SLASHES) && first == '\\')) {
// Path is already absolute; nothing to do
return dest;
}
// Path is not already absolute; we've got work to do.
if (getcwd (dest, destLen) == NULL)
{
// errno is set
return NULL;
}
{
size_t tempLen;
tempLen = strlen (dest);
assert (tempLen > 0);
dest += tempLen;
destLen -= tempLen;
}
if (dest[-1] != '/'
#ifdef WIN32
&& dest[-1] != '\\'
#endif
)
{
// Need to add a slash.
// There's always space, as we overwrite the '\0' that getcwd()
// always returns.
dest[0] = '/';
dest++;
destLen--;
}
return dest;
}